Abstract: A rotor assembly for an electric generator, comprising a rotor element, conductive rotor windings and a plurality of rotor slot wedges. The rotor element comprises rotor teeth and rotor slots. At least a first rotor slot wedge is in a first rotor slot and has a shape that encompasses a rectangular prismatic shape and first and second protrusions. At least a first edge on an end surface of at least a first rotor slot wedge has a degree of smoothness as specified herein, and/or is radiused (as defined herein). Also, methods of refurbishing an electric generator, comprising radiusing at least a portion of at least one edge of a wedge. Also, removing a wedge from rotor element, radiusing at least one edge of the wedge, and inserting the wedge into a rotor element.

Abstract: A rotor assembly for an electric generator, comprising a rotor element, conductive rotor windings and a plurality of rotor slot wedges. The rotor element comprises rotor teeth and rotor slots. At least a first rotor slot wedge is in a first rotor slot and has a shape that encompasses a rectangular prismatic shape and first and second protrusions. At least a first edge on an end surface of at least a first rotor slot wedge has a degree of smoothness as specified herein, and/or is radiused (as defined herein). Also, methods of refurbishing an electric generator, comprising radiusing at least a portion of at least one edge of a wedge. Also, removing a wedge from rotor element, radiusing at least one edge of the wedge, and inserting the wedge into a rotor element.

Abstract: A method of maintaining a high voltage bushing can comprise inspecting a high voltage bushing connection, the high voltage bushing connection comprising a tubular lead, a lower stud connector, and the high voltage bushing. A method of maintaining a high voltage bushing can also comprise restoring the high voltage bushing connection, which can further comprise applying conductive material to at least one of a mating portion of a tubular lead and a mating portion of a high voltage bushing, machining an outside diameter of at least one of the mating portion or the tubular lead and the mating portion of the high voltage bushing to a predetermined outer diameter, and machining a mating portion of a lower stud connector to a predetermined inner diameter. A high voltage bushing connection can comprise a restored mating portion of a tubular connector and a restored lower stud connector.

Abstract: An amortisseur assembly comprises an end winding amortisseur. The end winding amortisseur comprises a body, at least one finger element, and a stop block. The body comprises a first edge. The finger element extends from the first edge of the body, and comprises a first surface. The stop block can attached to the first surface. The amortisseur assembly can further comprise a slot amortisseur so that the stop block abuts an end of the slot amortisseur. The amortisseur assembly can be assembled on a radial-flow cooled rotor. A method of forming an amortisseur assembly for a rotor comprises providing one or more slot amortisseurs and one or more of the end winding amortisseurs. The slot amortisseurs can be provided by shortening existing slot amortisseurs. The slot springs can replace existing slot springs, and the one or more slot springs can be longer than the existing slot springs.

Abstract: A method of maintaining a high voltage bushing can comprise inspecting a high voltage bushing connection, the high voltage bushing connection comprising a tubular lead, a lower stud connector, and the high voltage bushing. A method of maintaining a high voltage bushing can also comprise restoring the high voltage bushing connection, which can further comprise applying conductive material to at least one of a mating portion of a tubular lead and a mating portion of a high voltage bushing, machining an outside diameter of at least one of the mating portion or the tubular lead and the mating portion of the high voltage bushing to a predetermined outer diameter, and machining a mating portion of a lower stud connector to a predetermined inner diameter. A high voltage bushing connection can comprise a restored mating portion of a tubular connector and a restored lower stud connector.

Abstract: An amortisseur assembly comprises an end winding amortisseur. The end winding amortisseur comprises a body, at least one finger element, and a stop block. The body comprises a first edge. The finger element extends from the first edge of the body, and comprises a first surface. The stop block can attached to the first surface. The amortisseur assembly can further comprise a slot amortisseur so that the stop block abuts an end of the slot amortisseur. The amortisseur assembly can be assembled on a radial-flow cooled rotor. A method of forming an amortisseur assembly for a rotor comprises providing one or more slot amortisseurs and one or more of the end winding amortisseurs. The slot amortisseurs can be provided by shortening existing slot amortisseurs. The slot springs can replace existing slot springs, and the one or more slot springs can be longer than the existing slot springs.